<template>
	<div class="wrapper">

		<!-- header -->
		<header>
			<p>商家列表</p>
		</header>

		<!-- 商家列表 -->
		<ul class="business">
			<li v-for="item in businessArr" @click="toBusinessInfo(item.businessId)">
				<div class="business-img">
					<img :src="item.businessImg">
					<div class="business-img-quantity" v-show="item.quantity>0">{{item.quantity}}</div>
				</div>
				<div class="business-info">
					<h3>{{item.businessName}}</h3>
					<p>&#165;{{item.starPrice}}起送 | &#165;{{item.deliveryPrice}}配送</p>
					<p>{{item.businessExplain}}</p>
				</div>
			</li>
		</ul>
		<!-- 空白区域，防止最后一个商家被底部菜单遮挡 -->
		<div class="spacer"></div>
		<!-- 底部菜单 -->
		<Footer></Footer>

	</div>
</template>

<script>
	import Footer from '../components/Footer.vue';

	export default {
		name: 'BusinessList',
		data() {
			return {
				orderTypeId: this.$route.query.orderTypeId,
				businessArr: [],
				user:{}
			}
		},
		created() {
		 this.user = this.$getSessionStorage('user');
		 
		 //根据orderTypeId查询商家信息
		 this.$axios.post('BusinessController/listBusinessByOrderTypeId',this.$qs.stringify({
		 orderTypeId:this.orderTypeId
		 })).then(response=>{
		 this.businessArr = response.data;
		 //判断是否登录
		 if(this.user!=null){
		 this.listCart();
		 }
		 }).catch(error=>{
		 console.error(error);
		 });
		 },
		components: {
			Footer
		},
		methods:{
			listCart(){
				this.$axios.get('CartController/listCart',this.$qs.stringify({ userId:this.user.userId})).then(response => {
					let ret = response.data;
					let cartArr = ret.result;
					//遍历所有商家列表
					for(let businessItem of this.businessArr){
						businessItem.quantity = 0;
						for(let cartItem of cartArr){
							if(cartItem.businessId == businessItem.businessId){
							businessItem.quantity += cartItem.quantity;
							}
						}
					}
					this.businessArr.sort();
				}).catch(error => {
					console.error(error);
				});
			},
			toBusinessInfo(businessId){
				this.$router.push({path:'/businessInfo',query:{businessId:businessId}})
			}
		}
	}
</script>

<style scoped>
	/********** 总容器 **********/
	.wrapper {
		width: 100%;
		height: 100vh;
	}

	/********** header **********/
	.wrapper header {
		width: 100%;
		height: 12vw;
		background-color: #0097FF;
		color: #fff;
		font-size: 4.8vw;
		position: fixed;
		left: 0;
		top: 0;
		z-index: 1000;
		display: flex;
		justify-content: center;
		align-items: center;
	}

	/**********商家列表************/
	.wrapper .business {
		width: 100%;
		margin-top: 12vw;
		margin-bottom: 14w;
	}

	.wrapper .business li {
		width: 100%;
		box-sizing: border-box;
		padding: 2.5vw;
		border-bottom: solid 1px #DDD;
		user-select: none;
		cursor: pointer;
		display: flex;

	}

	.wrapper .business li .business-img {
		position: relative;
	}

	.wrapper .business li .business-img img {
		width: 20vw;
		height: 20vw;
	}

	.wrapper .business li .business-img .business-img-quantity {
		width: 5vw;
		height: 5vw;
		background-color: red;
		color: #fff;
		font-size: 3.6vw;
		border-radius: 2.5vw;
		display: flex;
		justify-content: center;
		align-items: center;
		position: absolute;
		right: -1.5vw;
		top: -1.5vw;
	}

	.wrapper .business li .business-info {
		margin-left: 3vw;
	}

	.wrapper .business li .business-info h3 {
		font-size: 3.8vw;
		color: #555;
	}

	.wrapper .business li .business-info p {
		font-size: 3vw;
		color: #888;
		margin-top: 2vw;
	}

	/* 空白区域样式 */
	.spacer {
		height: 14vw;
		width: 100%;
	}
</style>
